The effect of the amount of nitrogen applied and of the method of application on the amounts of phosphorus and potassium removed from the field with the product in cauliflower cultivation was studied in three field experiments. Band placement or split application of nitrogen did not influence phosphorus or potassium uptake. At optimum nitrogen application, an average of 17 kg of phosphorus (P) and 129 kg of potassium (K) per hectare was removed from the field with the product at harvest. Calculation of nutrient removal by cauliflower based on nutrient content and fresh yield weight is not possible, because fresh yield weight of cauliflower is not normally determined. Variation in amounts of phosphorus and potassium removed from the field appears limited. Therefore fixed amounts of 20 kg of phosphorus and 130 kg of potassium per hectare are proposed for the amounts of phosphorus and potassium removed from the field with the product in cauliflower cultivation.
|Publication status||Published - 2009|